Top 350+ Solved Digital Electronics MCQ Questions Answer
Q. Propagation delay time, tPLH, is measured from the ________.
a. triggering edge of the clock pulse to the low-to-high transition of the output
b. triggering edge of the clock pulse to the high-to-low transition of the output
c. preset input to the low-to-high transition of the output
d. clear input to the high-to-low transition of the output
Q. How is a J-K flip-flop made to toggle?
a. j = 0, k = 0
b. j = 1, k = 0
c. j = 0, k = 1
d. j = 1, k = 1
Q. The ________ circuit overcomes the problem of switching caused by jitter on the inputs.
a. astable multivibrator
b. monostable multivibrator
c. bistable multivibrator
d. schmitt trigger
Q. Why would a delay gate be needed for a digital circuit?
a. a delay gate is never needed.
b. to provide for setup times
c. to provide for hold times
d. to provide for setup times and hold times
Q. A Schmitt trigger has VT+ = 2.0 V and VT– = 1.2 V. What is the hysteresis voltage of the Schmitt trigger?
a. 0.4 volt
b. 0.6 volt
c. 0.8 volt
d. 1.2 volts
Q. Which of the following circuit parameters would be most likely to limit the maximum operating frequency of a flip-flop?
a. setup and hold time
b. clock pulse high and low time
c. propagation delay time
d. clock transition time
Q. What is the result of taking more samples during the quantization process?
a. more errors in the analog-to-digital conversion
b. more bit requirements
c. more accurate signal representation
d. more bit requirements and more accurate signal representation
Q. Which A/D conversion method has a fixed conversion time?
a. single-slope analog-to-digital converter
b. dual-slope analog-to-digital converter
c. digital-ramp analog-to-digital converter
d. successive-approximation analog-to-digital converter
Q. Which is a typical application of digital signal processing?
a. noise elimination
b. music signal processing
c. image processing
d. all of the above
Q. What do we call the manipulation of an analog signal in a digital domain?
a. analog-to-digital conversion
b. digital-to-analog conversion
c. digital signal processing
d. signal filtering
Q. How many address bits are needed to select all memory locations in the 2118 16K × 1 RAM?
a. 8
b. 10
c. 14
d. 16
Q. The check sum method of testing a ROM:
a. indicates if the data in more than one memory location is incorrect.
b. provides a means for locating and correcting data errors in specific memory locations.
c. allows data errors to be pinpointed to a specific memory location.
d. simply indicates that the contents of the rom are incorrect.